Ditch FreeImage

dependencies/CMakeLists.txt

@@ -1,13 +1,9 @@
 project(dependencies)
 
-# ZLib
+# ZLib (Needed By libpng)
-if(BUILD_ARM_COMPONENTS)
 add_subdirectory(zlib)
-endif()
 # LibPNG
-if(BUILD_ARM_COMPONENTS)
 add_subdirectory(libpng)
-endif()
 # Minecraft: Pi Edition
 if(BUILD_ARM_COMPONENTS AND NOT MCPI_OPEN_SOURCE_ONLY)
     add_subdirectory(minecraft-pi)

dependencies/glfw/CMakeLists.txt

@@ -6,16 +6,16 @@ add_compile_options(-w)
 ## GLFW
 
 # Download
-set(BUILD_SHARED_LIBS FALSE)
+set(BUILD_SHARED_LIBS FALSE CACHE BOOL "" FORCE)
-set(GLFW_BUILD_EXAMPLES FALSE)
+set(GLFW_BUILD_EXAMPLES FALSE CACHE BOOL "" FORCE)
-set(GLFW_BUILD_TESTS FALSE)
+set(GLFW_BUILD_TESTS FALSE CACHE BOOL "" FORCE)
-set(GLFW_BUILD_DOCS FALSE)
+set(GLFW_BUILD_DOCS FALSE CACHE BOOL "" FORCE)
-set(GLFW_INSTALL FALSE)
+set(GLFW_INSTALL FALSE CACHE BOOL "" FORCE)
-set(GLFW_BUILD_WIN32 FALSE)
+set(GLFW_BUILD_WIN32 FALSE CACHE BOOL "" FORCE)
-set(GLFW_BUILD_COCOA FALSE)
+set(GLFW_BUILD_COCOA FALSE CACHE BOOL "" FORCE)
-set(GLFW_BUILD_X11 TRUE)
+set(GLFW_BUILD_X11 TRUE CACHE BOOL "" FORCE)
-set(GLFW_BUILD_WAYLAND TRUE)
+set(GLFW_BUILD_WAYLAND TRUE CACHE BOOL "" FORCE)
-set(GLFW_LIBRARY_TYPE "STATIC")
+set(GLFW_LIBRARY_TYPE "STATIC" CACHE BOOL "" FORCE)
 add_subdirectory(src EXCLUDE_FROM_ALL)
 
 # Ensure Build

dependencies/libpng/CMakeLists.txt

@@ -5,16 +5,40 @@ add_compile_options(-w)
 
 ## LibPNG
 
+# Options
+set(PNG_TESTS FALSE CACHE BOOL "" FORCE)
+set(PNG_STATIC ${BUILD_NATIVE_COMPONENTS} CACHE BOOL "" FORCE)
+set(PNG_SHARED ${BUILD_ARM_COMPONENTS} CACHE BOOL "" FORCE)
+if(BUILD_NATIVE_COMPONENTS)
+    set(PNG_NO_STDIO FALSE CACHE BOOL "" FORCE)
+else()
+    set(PNG_NO_STDIO TRUE CACHE BOOL "" FORCE)
+endif()
+
 # Download
 set(ZLIB_LIBRARY zlibstatic)
 set(ZLIB_INCLUDE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../zlib/src" "${CMAKE_CURRENT_BINARY_DIR}/../zlib/src")
 set(CMAKE_POLICY_DEFAULT_CMP0054 OLD) # Silence Warning
 add_subdirectory(src EXCLUDE_FROM_ALL)
 set(CMAKE_POLICY_DEFAULT_CMP0054 NEW) # Re-Enable New Behavior
+if(TARGET png12)
     set_target_properties(png12 PROPERTIES LINK_OPTIONS "LINKER:--version-script=${CMAKE_CURRENT_SOURCE_DIR}/libpng.vers") # Use Symbol Versioning
     set_target_properties(png12 PROPERTIES DEBUG_POSTFIX "") # Fix LibPNG Suffix In Debug Mode
+endif()
+if(TARGET png12_static)
+    find_library(M_LIBRARY NAMES m REQUIRED)
+    target_link_libraries(png12_static "${ZLIB_LIBRARY}" "${M_LIBRARY}")
+    target_include_directories(png12_static PUBLIC src)
+endif()
 
 # Ensure Build
+if(TARGET png12)
     add_custom_target(png12-build ALL DEPENDS png12)
+endif()
+if(TARGET png12_static)
+    add_custom_target(png12_static-build ALL DEPENDS png12_static)
+endif()
 # Install
+if(TARGET png12)
     install(TARGETS png12 DESTINATION "${MCPI_LIB_DIR}")
+endif()

docs/ARCHITECTURE.md

@@ -98,12 +98,11 @@ This component contains all MCPI symbols.
 ## Dependencies
 MCPI-Reborn has several dependencies:
 * MCPI (Bundled)
-* GLFW (Only In Client Mode)
+* GLFW (Only In Client Mode; Bundled)
-  * Open GL ES 1.1
+  * Open GL ES 2.0
   * EGL
 * OpenAL (Only In Client Mode)
 * ZLib (Required By LibPNG; Bundled)
 * LibPNG (Bundled)
-* FreeImage (Only In Client Mode)
 * QEMU User Mode (Only On Non-ARM Hosts; Runtime Only)
-* Zenity (Only In Client Mode; Runtime Only)
+* Zenity (Only In Client Mode; Runtime Only; Bundled)

docs/BUILDING.md

@@ -3,12 +3,10 @@
 ## Build Dependencies
 * Common
   * ARM Compiler
-  * Host Compiler (Clang)
+  * Host Compiler
   * CMake
 * Host Architecture Dependencies
   * Client Mode Only
-    * GLFW
-    * FreeImage
     * OpenAL
 
 ## Runtime Dependencies
@@ -16,11 +14,8 @@
   * QEMU User-Mode
 * Host Architecture Dependencies
   * Client Mode Only
-    * OpenGL ES 1.1
+    * OpenGL ES 2.0
-    * GLFW
-    * FreeImage
     * OpenAL
-    * Zenity
 
 ## Instructions
 ```sh

media-layer/core/CMakeLists.txt

@@ -26,12 +26,10 @@ if(TARGET media-layer-core-real)
     # Link
     target_link_libraries(media-layer-core-real media-layer-headers reborn-util pthread dl)
     if(NOT MCPI_HEADLESS_MODE)
-        # Find FreeImage
-        find_library(FREEIMAGE_LIBRARY NAMES freeimage libfreeimage.so.3 REQUIRED)
         # OpenAL
         find_library(OPENAL_LIBRARY NAMES openal REQUIRED)
         # Link
-        target_link_libraries(media-layer-core-real "${FREEIMAGE_LIBRARY}" "${OPENAL_LIBRARY}" m GLESv1_CM glfw)
+        target_link_libraries(media-layer-core-real png12_static "${OPENAL_LIBRARY}" m GLESv1_CM glfw)
     endif()
 endif()
 

media-layer/core/src/screenshot.c

@@ -12,7 +12,7 @@
 #include <errno.h>
 #include <sys/stat.h>
 
-#include <FreeImage.h>
+#include <png.h>
 
 #include <GLES/gl.h>
 #include <media-layer/core.h>
@@ -35,6 +35,70 @@ static void ensure_screenshots_folder(char *screenshots) {
 #define TIME_SIZE 20
 
 // Take Screenshot
+static int save_png(const char *filename, unsigned char *pixels, int line_size, int width, int height) {
+    // Return value
+    int ret = 0;
+
+    // Variables
+    png_structp png = NULL;
+    png_infop info = NULL;
+    FILE *file = NULL;
+    png_colorp palette = NULL;
+    png_bytep rows[height];
+    for (int i = 0; i < height; ++i) {
+        rows[height - i - 1] = (png_bytep) (&pixels[i * line_size]);
+    }
+
+    // Init
+    png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+    if (!png) {
+        ret = 1;
+        goto ret;
+    }
+    info = png_create_info_struct(png);
+    if (!info) {
+        ret = 1;
+        goto ret;
+    }
+
+    // Open File
+    file = fopen(filename, "wb");
+    if (!file) {
+        ret = 1;
+        goto ret;
+    }
+
+    // Prepare To Write
+    png_init_io(png, file);
+    png_set_IHDR(png, info, width, height, 8 /* Depth */, PNG_COLOR_TYPE_RGB_ALPHA, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
+    palette = (png_colorp) png_malloc(png, PNG_MAX_PALETTE_LENGTH * sizeof(png_color));
+    if (!palette) {
+        ret = 1;
+        goto ret;
+    }
+    png_set_PLTE(png, info, palette, PNG_MAX_PALETTE_LENGTH);
+    png_write_info(png, info);
+    png_set_packing(png);
+
+    // Write
+    png_write_image(png, rows);
+    png_write_end(png, info);
+
+ ret:
+    // Free
+    if (palette != NULL) {
+        png_free(png, palette);
+    }
+    if (file != NULL) {
+        fclose(file);
+    }
+    if (png != NULL) {
+        png_destroy_write_struct(&png, &info);
+    }
+
+    // Return
+    return ret;
+}
 void media_take_screenshot(char *home) {
     // Get Directory
     char *screenshots = NULL;
@@ -88,41 +152,18 @@ void media_take_screenshot(char *home) {
     unsigned char pixels[size];
     glReadPixels(x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 
-    // Handle Little Endian Systems
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-    // Swap Red And Blue
-    for (int j = 0; j < width; j++) {
-        for (int k = 0; k < height; k++) {
-            int pixel = (k * line_size) + (j * 4);
-            // Swap
-            int red = pixels[pixel];
-            int blue = pixels[pixel + 2];
-            pixels[pixel] = blue;
-            pixels[pixel + 2] = red;
-        }
-    }
-#endif
-
     // Save Image
-    FIBITMAP *image = FreeImage_ConvertFromRawBits(pixels, width, height, line_size, 32, FI_RGBA_RED_MASK, FI_RGBA_GREEN_MASK, FI_RGBA_BLUE_MASK, 0);
+    if (save_png(file, pixels, line_size, width, height)) {
-    if (!FreeImage_Save(FIF_PNG, image, file, 0)) {
         INFO("Screenshot Failed: %s", file);
     } else {
         INFO("Screenshot Saved: %s", file);
     }
-    FreeImage_Unload(image);
 
     // Free
     free(file);
     free(screenshots);
 }
 
-// Init
-__attribute__((constructor)) static void init() {
-    // Init FreeImage
-    FreeImage_Initialise(0);
-}
-
 #else
 void media_take_screenshot() {
     // NOP

scripts/install-dependencies.sh

@@ -28,8 +28,7 @@ run() {
 
     # Host Dependencies Needed For Compile
     queue_pkg \
-        libwayland-bin \
+        libwayland-bin
-        libfreeimage-dev
 
     # Host Dependencies Needed For Running
     queue_pkg \
@@ -44,7 +43,6 @@ run() {
 
         # Dependencies
         queue_pkg \
-            libfreeimage3:$1 \
             libopenal-dev:$1
 
         # GLFW Dependencies

scripts/tools/generate-appimage-builder-yaml.js

@@ -40,7 +40,6 @@ if (mode === 'client') {
         'libgdk-pixbuf2.0-0',
         'librsvg2-common',
         'shared-mime-info',
-        'libfreeimage3',
         'libopenal1'
     );
 }